Petee mcilugh



P. MoHUGH.

NUT LOCK (No Model.)

v Patented Feb. 2, 1897. v

WITNESSES %%/M fT/V STATES ATENT OFFICE.

PETER MCHUGH, OF DYER, TENNESSEE, ASSIGN-OR OF ONE-HALF TO HENRY LUKEBIGGS, OF SAME PLACE.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 576,466, dated February2, 1897.

Application filed September 4, 1896. Serial No. 604,870. (No model.)

To aZZ whom, it may concern: against the walls of the inner and theouter Be it known that I, PETER MCHUGH, a citinuts of each bolt. Iprefer to drive the key zen of the United States, residing at Dyer, inhard upon the locking-plate and against the the county of Gibson andState of Tennessee, nuts on both sides of said plate, because 5 haveinvented a new and useful Improvement thereby the key will serve tobrace the nutted in Nut-Locks, of which the following is a ends of thebolts. This bracing function is specification. shown in Fig. 2, whereinthe key-plate 7 is My improvement resides in a construction seen aswedgeshaped in the direction of its whereby a pair of bolts areprovided, each fold and as driven down between and against IO havingdouble nut-s, both of which are locked the nuts 44, and in Fig. 3,wherein the double on the bolt by a key-plate, which also binds ends ofthe folded key-plate are seen as abutand braces the nutted ends of thebolts in reting alike against the inner and the outer lation to eachother and also to the fish-plate nuts, and in this way the nutted endsof the and the rail to render their connection firmer bolts are given afirmer connection with the I 5 and stronger, as I will now describe, andparfish-plate and with the rail.

ticularly point out the precise improvement The locking-plate and thekey-plate are of in the claims concluding this specification. sufficientthickness to give them the stiffness The accompanying drawingsillustrate my of braces, so that in driving the wedge-plate improvement,in whichits binding action will be upon both nuts of 7c 20 Figure 1shows in horizontal section my each bolt and upon the upset ends 6 6 ofthe improved locking device for double nuts as locking-plate. Moreover,the firmness of the applied to a pair of bolts and the fish-plate ofbracing action of the wedge-key upon the a railway'joint. Fig. 2 shows aside view of double nuts of each bolt is rendered more the same. Fig. 3is a top view of the double effective by the abutting action of the key2 5 nut-lock, and Fig. 4 is a vertical cross-section equally upon bothnuts.

of the same. Fig. 5is a like view showing the The outer leaf or side ofthe key I prefer key as applied in a reversed position. to make widerthan the width of the locking- While I have illustrated the doublenutplate, so as to extend below it, that this side of lock device asapplied to the fish-plate of a the key may be upset, as at 8, Fig. 4,beneath 8o 30 railroad-rail joint, the device is obviously apthelocking-plate and thereby lock the key to plicable to machinery wherebolts are used in it, or the key may be of less width than the pairswith double nuts and the nuts are sublocking-plate and pinned to it.ject to jarring. Instead of seating the key upon the upper 2 are thefish-plates, which cross the railedge of the lock-plate it may beapplied to 3 5 joint and are secured to each rail by a pair of the underside of the latter, in which case one bolts 3 3, each secured by doublenuts 4 4:, end of the key will be upset to allow it to be bound againstthe fish-plate. Instead of drivfirst slipped under and its bent endapplied to ing the outer nut upon the inner one I place the inner sideof the lock-plate and between upon the pair of bolts and against theinner the inner nuts, and the outer end of the key 0 4o nuts a plate 5,having its ends 6 6 bent inupset between the outer nuts to lock them.ward over and upon the sides of the inner In this case the key at itsbend may rest upon nuts, which, having been driven home, are the flangeof the rail and is thereby secured in thereby looked upon the boltsagainst the fishposition between the nuts, or the key may be plate. Uponthis locking-plate the outer nuts secured to the locking-plate by acotter-pin 9 45 are driven on their bolts and each nut is locked orequivalent fastening passed through holes by a key 7, placed or hungupon the lock-plate in the key and plate. between the nuts so as toengage them. A I claim as my improvementsimple construction of key forthis purposeis 1. A nut-locking device and brace for a pair aU-shapedplate adapted to fit upon and over of bolts, consisting of thebolts, the double I00 50 the locking-plate somewhat likea saddle, withnuts on each bolt, a plate engaging the bolts the lapping edges of theplate abutting alike between the nuts and having its ends engaging theouter sides of the inner nuts of each bolt and a U-shaped plate havingone of its folded parts abutting against the inner nuts and the otherabutting against the outer nuts on their walls between the bolts therebyforming, with the bolt-engaging plate, a lock for both nuts and a bracefor the nutted ends of the bolts, as shown and described.

2. In a nut-lock, the combination with the rail and the fish-plate, of apair of bolts and the double nuts on each bolt, a plate engaging thebolts between the nuts and having its ends engaging the outer walls ofthe inner nuts of each bolt, and a plate U-shaped in cross-section andwedge-shaped lengthwise 15 whereby it is adapted to be driven upon thebolt engaging plate with its double ends against the walls respectivelyof the inner and the outer nuts between the bolts to bind and bracetheir nutted ends in relation to the fish- 20 plate and the rail.

PETER MOHUGII.

\Vltnesses:

E. T. MEADE, L. L. DAVIDSON.

